大尺寸扩口式管路锥面连接密封性能研究

打开文本图片集

中图分类号：TH122 文献标志码：A 文章编号:1003-5168(2025)23-0027-05

DOI:10.19968/j.cnki.hnkj.1003-5168.2025.23.005

Study on Sealing Performance of Large-Dimensional Flared Tube Conical Connections

HE Yangbo WANG Kai CHEN Zhi LI Yufang (AvicXi'an Aircraft Industry Group Co.,Ltd.,Xi'an71Oo89,China)

Abstract: [Purposes] This study investigates the sealing performance of flared tube connections with dimensions larger than those recommended by standards,aiming to provide guidance for large-size flared tube conical connections.[Methods] A simulation model of a typical large-size conical tube connection is established,and the contact pressure and contact width under different preload forces are analyzed. [Findings] The simulation results indicate that the large-size flared tube connection can still achieve appropriate contact pressure and contact width,ensuring sealing performance.[Conclusions] The research on the sealing performance of large-size flared tube conical connections broadens the application scenarios of this connection type and lays the foundation for its use in automotive,aviation,aerospace, and other fields.

Keywords: flared tube fitings; sealing performance; large-size connections; conical surface contact; preload optimization

0 引言

扩口式管路连接形式在管路上通过端部扩口形成锥面，并通过螺纹预紧的形式，将两个管路接头锥面紧密贴合，从而形成密封。（剩余7063字）